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Finding the Fourth Proportional to 438,728.20, 657,654.90 and 201,657.40

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Solution

The fourth proportional to 438,728.20, 657,654.90 and 201,657.40 is: 302,285.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,728.20 : 657,654.90 = 201,657.40 : x
  2. Step 2: Convert to fraction form
    438,728.20/657,654.90 = 201,657.40/x
  3. Step 3: Cross multiply
    438,728.20x = 657,654.90 × 201,657.40
  4. Step 4: Simplify right side
    438,728.20x = 132,620,977,231.26
  5. Step 5: Solve for x
    x = 132,620,977,231.26/438,728.20
  6. Step 6: Final answer
    x = 302,285.05

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